…for many a time
I have been half in love with easeful Death,
Call’d him soft names in many a mused rhyme,
To take into the air my quiet breath;
Now more than ever seems it rich to die,
To cease upon the midnight with no pain.

–John Keats

In the New York Times, Princeton’s professional ethicist supreme Peter Singer admires the work of antinatalist South African philosopher David Benatar:

Schopenhauer’s pessimism has had few defenders over the past two centuries, but one has recently emerged, in the South African philosopher David Benatar, author of a fine book with an arresting title: “Better Never to Have Been: The Harm of Coming into Existence.” One of Benatar’s arguments trades on something like the asymmetry noted earlier. To bring into existence someone who will suffer is, Benatar argues, to harm that person, but to bring into existence someone who will have a good life is not to benefit him or her. Few of us would think it right to inflict severe suffering on an innocent child, even if that were the only way in which we could bring many other children into the world. Yet everyone will suffer to some extent, and if our species continues to reproduce, we can be sure that some future children will suffer severely. Hence continued reproduction will harm some children severely, and benefit none.

Benatar also argues that human lives are, in general, much less good than we think they are. We spend most of our lives with unfulfilled desires, and the occasional satisfactions that are all most of us can achieve are insufficient to outweigh these prolonged negative states. If we think that this is a tolerable state of affairs it is because we are, in Benatar’s view, victims of the illusion of pollyannaism. This illusion may have evolved because it helped our ancestors survive, but it is an illusion nonetheless. If we could see our lives objectively, we would see that they are not something we should inflict on anyone.

Here is a thought experiment to test our attitudes to this view. Most thoughtful people are extremely concerned about climate change. Some stop eating meat, or flying abroad on vacation, in order to reduce their carbon footprint. But the people who will be most severely harmed by climate change have not yet been conceived. If there were to be no future generations, there would be much less for us to feel to guilty about.

So why don’t we make ourselves the Last Generation on Earth? If we would all agree to have ourselves sterilized then no sacrifices would be required — we could party our way into extinction! …

Is a world with people in it better than one without? Put aside what we do to other species — that’s a different issue. Let’s assume that the choice is between a world like ours and one with no sentient beings in it at all. And assume, too — here we have to get fictitious, as philosophers often do — that if we choose to bring about the world with no sentient beings at all, everyone will agree to do that. No one’s rights will be violated — at least, not the rights of any existing people. Can non-existent people have a right to come into existence?

I do think it would be wrong to choose the non-sentient universe. In my judgment, for most people, life is worth living. Even if that is not yet the case, I am enough of an optimist to believe that, should humans survive for another century or two, we will learn from our past mistakes and bring about a world in which there is far less suffering than there is now. But justifying that choice forces us to reconsider the deep issues with which I began. Is life worth living? Are the interests of a future child a reason for bringing that child into existence? And is the continuance of our species justifiable in the face of our knowledge that it will certainly bring suffering to innocent future human beings?

Friedrich Nietszche (Thus Spake Zarathustra, 1883-1885, prologue, §5) predicted with complete accuracy that the result of nihilism would be Benatars and Singers.

Alas! There cometh the time when man will no longer give birth to any star. Alas! There cometh the time of the most despicable man, who can no longer despise himself.

Lo! I show you THE LAST MAN.

“What is love? What is creation? What is longing? What is a star?”–so asketh the last man and blinketh.

The earth hath then become small, and on it there hoppeth the last man who maketh everything small. His species is ineradicable like that of the ground-flea; the last man liveth longest.

“We have discovered happiness”–say the last men, and blink thereby.

They have left the regions where it is hard to live; for they need warmth. One still loveth one’s neighbour and rubbeth against him; for one needeth warmth.

Turning ill and being distrustful, they consider sinful: they walk warily. He is a fool who still stumbleth over stones or men!

A little poison now and then: that maketh pleasant dreams. And much poison at last for a pleasant death.

One still worketh, for work is a pastime. But one is careful lest the pastime should hurt one.

One no longer becometh poor or rich; both are too burdensome. Who still wanteth to rule? Who still wanteth to obey? Both are too burdensome.

No shepherd, and one herd! Every one wanteth the same; every one is equal: he who hath other sentiments goeth voluntarily into the madhouse.

“Formerly all the world was insane,”–say the subtlest of them, and blink thereby.

They are clever and know all that hath happened: so there is no end to their raillery. People still fall out, but are soon
reconciled–otherwise it spoileth their stomachs.

They have their little pleasures for the day, and their little pleasures for the night, but they have a regard for health.